# JuMP Multi-threading example **URL:** \ **Category:** Optimization (Mathematical)\ **Tags:** jump\ **Created:** [February 25, 2023, 11:27pm UTC](https://discourse.julialang.org/t/jump-multi-threading-example/95210 "2023-02-25T23:27:37Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Stuart\_Rogers](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/stuart_rogers/32/10694_2.png) [@Stuart\_Rogers](https://discourse.julialang.org/u/Stuart_Rogers)\ **Post date:** [February 25, 2023, 11:27pm UTC](https://discourse.julialang.org/t/jump-multi-threading-example/95210/1 "2023-02-25T23:27:37Z")
In this JuMP example of multi-threading, why does the vector of solutions have 8 elements, while the for loop size is 10? > **[Parallelism 路 JuMP](https://jump.dev/JuMP.jl/stable/tutorials/algorithms/parallelism/#With-multi-threading)** > > Documentation for JuMP. ---
**Author:** ![odow](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/odow/32/28685_2.png) [@odow](https://discourse.julialang.org/u/odow)\ **Post date:** [February 26, 2023, 12:12am UTC](https://discourse.julialang.org/t/jump-multi-threading-example/95210/2 "2023-02-26T00:12:44Z")
That looks like a bug 馃槃 I鈥檒l fix ---
**Author:** ![odow](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/odow/32/28685_2.png) [@odow](https://discourse.julialang.org/u/odow)\ **Post date:** [February 26, 2023, 12:22am UTC](https://discourse.julialang.org/t/jump-multi-threading-example/95210/3 "2023-02-26T00:22:02Z")
Fixed [[docs] fix thread safefy issue in parallelism tutorial by odow 路 Pull Request #3240 路 jump-dev/JuMP.jl 路 GitHub](https://github.com/jump-dev/JuMP.jl/pull/3240). (I only added the tutorial a couple of days ago, so it鈥檚 a little new: [Sign in to GitHub 路 GitHub](https://github.com/jump-dev/JuMP.jl/pull/3231.))